. /////////////////////////////////////////////////////////////////////////////
.set previousversion "4.75"
-.set version "4.80"
+.set version "4.80.1"
.set ACL "access control lists (ACLs)"
.set I " "
<author><firstname>Exim</firstname><surname>Maintainers</surname></author>
<authorinitials>EM</authorinitials>
<revhistory><revision>
- <revnumber>4.80</revnumber>
- <date>17 May 2012</date>
+ <revnumber>4.80.1</revnumber>
+ <date>24 Oct 2012</date>
<authorinitials>EM</authorinitials>
</revision></revhistory>
<copyright><year>2012</year><holder>University of Cambridge</holder></copyright>
settings can be obtained by using &%routers%&, &%transports%&, or
&%authenticators%&.
+.cindex "environment"
+If &%environment%& is given as an argument, the set of environment
+variables is output, line by line. Using the &%-n%& flag supresses the value of the
+variables.
+
.cindex "options" "macro &-- extracting"
If invoked by an admin user, then &%macro%&, &%macro_list%& and &%macros%&
are available, similarly to the drivers. Because macros are sometimes used
file that exists is used. Failure to open an existing file stops Exim from
proceeding any further along the list, and an error is generated.
+The file names need to be absolute names.
+
When this option is used by a caller other than root, and the list is different
from the compiled-in list, Exim gives up its root privilege immediately, and
runs with the real and effective uid and gid set to those of the caller.
-.section "Expansion of lists" "SECID75"
+.section "Expansion of lists" "SECTlistexpand"
.cindex "expansion" "of lists"
Each list is expanded as a single string before it is used. The result of
expansion must be a list, possibly containing empty items, which is split up
.vindex "&$host_lookup_failed$&"
See &$host_lookup_deferred$&.
+.vitem &$initial_cwd$&
+.vindex "&$initial_cwd$&
+This variable contains the full path name of the initial working
+directory of the current Exim process. This may differ from the current
+working directory, as Exim changes this to "/" during early startup, and
+to &$spool_directory$& later.
.vitem &$inode$&
.vindex "&$inode$&"
This option defines the ACL that is run when an SMTP VRFY command is
received. See chapter &<<CHAPACL>>& for further details.
+.new
+.option add_environment main "string list" empty
+.cindex "environment" "inherited"
+This option allows to set individual environment variables that the
+currently linked libraries and programs in child processes use. The
+default list is empty,
+.wen
+
.option admin_groups main "string list&!!" unset
.cindex "admin user"
This option is expanded just once, at the start of Exim's processing. If the
.option ignore_fromline_local main boolean false
See &%ignore_fromline_hosts%& above.
+.new
+.option keep_environment main "string list" unset
+.cindex "environment" "inherited"
+This option contains a string list of environment variables to keep.
+You have to trust these variables or you have to be sure that
+these variables do not impose any security risk. Keep in mind that
+during the startup phase Exim is running with an effective UID 0 in most
+installations. As the default value is an empty list, the default
+environment for using libraries, running embedded Perl code, or running
+external binaries is empty, and does not not even contain PATH or HOME.
+
+Actually the list is interpreted as a list of patterns
+(&<<SECTlistexpand>>&), except that it is not expanded first.
+
+WARNING: Macro substitution is still done first, so having a macro
+FOO and having FOO_HOME in your &%keep_environment%& option may have
+unexpected results. You may work around this using a regular expression
+that does not match the macro name: ^[F]OO_HOME$.
+
+Current versions of Exim issue a warning during startup if you do not mention
+&%keep_environment%& in your runtime configuration file and if there is
+anything in your environment. Future versions may not issue that warning
+anymore.
+.wen
+
.option keep_malformed main time 4d
This option specifies the length of time to keep messages whose spool files
transport driver.
-.option openssl_options main "string list" unset
+.option openssl_options main "string list" "+no_sslv2"
.cindex "OpenSSL "compatibility options"
This option allows an administrator to adjust the SSL options applied
by OpenSSL to connections. It is given as a space-separated list of items,
&%sender_unqualified_hosts%&, or if the message was submitted locally (not
using TCP/IP), and the &%-bnq%& option was not set.
+.option set_environment main "string list" empty
+.cindex "environment"
+This option allows to set individual environment variables that the
+currently linked libraries and programs in child processes use. The
+default list is empty,
+
.option smtp_accept_keepalive main boolean true
.cindex "keepalive" "on incoming connection"
PKCS#3 representation of the DH prime. If the file does not exist, for
OpenSSL it is an error. For GnuTLS, Exim will attempt to create the file and
fill it with a generated DH prime. For OpenSSL, if the DH bit-count from
-loading the file is greater than &%tls_dh_max_bits$& then it will be ignored,
+loading the file is greater than &%tls_dh_max_bits%& then it will be ignored,
and treated as though the &%tls_dhparam%& were set to "none".
If this option expands to the string "none", then no DH parameters will be
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